Comment économiser l'énergie en entreprise ? | Conférence energissima 2023

Comment économiser l'énergie en entreprise ? | Conférence energissima 2023

How to save energy in business? | energissima 2023 Conference

🎙 Richard Paquet 👥 124 📅 June 8, 2023 ⏱ 38 min 👁 14 📄 science communication 🧭 2026-10-09
Available in: English (current) Français

Keywords

energy efficiencysobrietyproduction machineswaste reductionindustry

Summary

The presentation by Richard Paquet, a lecturer and researcher at the Fribourg School of Engineering and Architecture, focuses on improving the energy performance of production machines in industrial settings. He contrasts future energy scenarios from a Swiss private bank and the French Negawatt group, arguing that energy consumption will no longer grow and that businesses must operate with less energy. He introduces the concept of a ‘sobriety rate’ (or efficiency) defined as the ratio of useful energy (energy directly contributing to the client’s product) to total energy consumption. Measurements show an average sobriety rate of 50%, meaning half the energy is wasted. He shares a vivid anecdote about a machine in a watchmaking factory where simply switching off the hydraulic unit during idle periods saved 3 kW, leading to a significant annual saving. Another case study in the Bulle region revealed a machine with an 80% waste rate due to peripherals running continuously. By engaging operators and using simple visual indicators (needles), teams identified and implemented low-cost measures such as adjusting ventilation, hydraulic pressure, and production scheduling. These actions resulted in energy savings equivalent to the consumption of 18 Swiss households for a single machine. Successful implementation relies on internal skills, a motivated facilitator, and management conviction beyond the financial argument. A pilot project with 12 companies in the Arc jurassien measured 30 machines, confirming an average 50% sobriety rate and a potential annual saving of 600 MWh. Larger companies with more resources tend to sustain efforts, while smaller ones may need external support. The talk emphasizes continuous improvement and adapting to fluctuating energy availability.

265 words

Critical Evaluation

Value of the Information & Strength of the Argument

The value of the information lies in its practical, actionable approach to energy savings in industry. The speaker provides concrete data from real measurements, such as the 50% average waste rate and specific examples like the hydraulic unit saving 3 kW. The argumentation is solid: he builds a case from the energy context to the need for efficiency and sobriety, then demonstrates with case studies how simple behavioral and technical changes can yield significant savings without impacting production. The anecdote about the operator discovering the hidden consumption of the hydraulic unit is compelling and illustrates the importance of measuring and discussing energy use. The insistence on engaging frontline workers and merging technical knowledge with process optimization is well-reasoned. However, the talk is based on a limited number of cases and does not provide a rigorous statistical analysis, so the generalizability of the 50% figure is open to question. The reasoning is coherent and convincing for a practitioner audience.

Scientific Rigor, Source Quality, Title Accuracy

The speaker draws on his own research and pilot projects, which adds credibility, but he references only broad scenarios (e.g., a Swiss private bank and the Negawatt group) without citing specific publications or data sources. No peer-reviewed literature is mentioned. The presentation is more of an experience report than a systematic review. The title accurately describes the content. The lack of explicit sources for the claims (e.g., the specific bank scenario) weakens the scientific rigor, but the data from his own measurements are presented transparently. The talk is aimed at a professional audience and does not overstate claims; it acknowledges the need for continuous improvement. No formal references are provided, but the he mentions the Arkem association as a partner.

293 words

Title / Content Match

The title accurately reflects the content: the conference addresses how businesses can reduce energy consumption without harming revenue, with practical examples and methods.

Quality & Reliability

8/10

The talk provides concrete case studies and measurement data (e.g., sobriety rate average of 50%, an example with an 80% waste rate, and an energy saving equivalent to 18 Swiss households). The speaker is a researcher and founder of a company, lending credibility, though the presentation is largely based on anecdotal evidence and pilot project results rather than peer-reviewed research.

Key Moments

Cited Sources

  • Energie-FR website — Cantonal program for energy transition and training, associated with the conference.
  • Energie-FR LinkedIn — Company page for Energie-FR, co-organizer of the conference.

Concurring Sources

  • Energy efficiency in industry — International Energy Agency resources on energy efficiency, supporting the claim of large potential savings.

Contribution & Novelties

The talk provides a novel, practical framework for energy efficiency in industry, centered on the ‘sobriety rate’ (useful energy / total energy) and the importance of involving frontline operators. A key contribution is the demonstration that simple, low-tech actions (e.g., switching off hydraulic units, adjusting peripherals) can yield significant savings, with a tangible example of 18 Swiss households worth of energy saved on a single machine. The speaker emphasizes the role of a dedicated facilitator and continuous measurement, offering a replicable model for other companies.

Pour aller plus loin :

  • Energy efficiency — Provides background on the broader concept and its importance.
  • Negawatt power — Explains the Negawatt scenario referenced in the talk, relevant to the energy transition.
  • ISO 50001 — An international standard for energy management systems, complementing the practical approach.
  • Energy management system — Further reading on systematic energy optimization techniques.

143 words

Radar Profile

The radar profile shows a well-balanced performance across most dimensions, with slightly lower 'quantite_information' due to the talk's narrow focus on a few case studies, but strong 'qualite_information' and 'fiabilite_globale' reflecting the speaker's practical experience and measured data.

Reliability 8/10